For the portrait and event photographer, sports shooter or landscape photographer, looking for a more balanced feel with vertical shooting capabilities, the MB-N12 Power Battery Pack is the ideal companion to the Z 8. The MB-N12 extends shooting time 1.8x (CIPA standard) for the Z 8 vs the single battery in the camera alone, along with adding the convenience of a vertical shutter release button, main- and sub-command dials, multi selector, Fn button and AF-ON button. Added onto the Z 8, the MB-N12 lets you concentrate on capturing more moments without having to worry about battery life. Thanks to its ergonomically designed grip, it provides firm and secure holding even when a long telephoto lens is attached. The MB-N12 also features hot swapping versatility of one battery and USB power charging and delivery. The MB-N12 is powered by two EN-EL15 series batteries (EN-EL15c, EN-EL15b or EN-EL15a).